diff --git a/flake.lock b/flake.lock
index 4f8ef36..056073f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -57,11 +57,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1640126586,
-        "narHash": "sha256-Brja0wQZFSl+hduOcBfE/oVPs0QattbILSMHC7/9fEg=",
+        "lastModified": 1640943848,
+        "narHash": "sha256-AXmbspe5EXTr2WsGdtBhFgKtGvzMmPBgqOanFvQq974=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "1b03a8ab7af9385b70b7d7c319c4a31a58c5cfa5",
+        "rev": "89bdef7994a20b5285454bf42c7d2b53b98d5754",
         "type": "github"
       },
       "original": {
@@ -82,11 +82,11 @@
       },
       "locked": {
         "dir": "contrib",
-        "lastModified": 1640135597,
-        "narHash": "sha256-LFS0/lTLdY26RgrMm35G3EY23jGUSf5ZxKIOjbPQhjA=",
+        "lastModified": 1640977835,
+        "narHash": "sha256-m2jkhz0087dZeRIA3oL/JmGv9PD06psnFhKPXku8jto=",
         "owner": "neovim",
         "repo": "neovim",
-        "rev": "0c35fd5fcc4cbfbd55d005bbb1139b068425b442",
+        "rev": "b218d02c442ebacba1fdef0cca9e40315a46aedd",
         "type": "github"
       },
       "original": {
@@ -98,11 +98,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1639986101,
-        "narHash": "sha256-Ow0+pkY7qMw6lMAvR1mEdUT9svJnrkbaRoqp4bkMTpg=",
+        "lastModified": 1640686209,
+        "narHash": "sha256-6glXUlKRDhEhNuYx6r3fXU6KH2/Vq9mJZjB9oUpwrmc=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "3f92db38374b2977aea8daf4c4fe2fa0eddbd60c",
+        "rev": "46df95ca81e7e4cf3458cdb4b7d1714b5fce9da5",
         "type": "github"
       },
       "original": {
@@ -114,11 +114,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1640139330,
-        "narHash": "sha256-Nkp3wUOGwtoQ7EH28RLVJ7EqB/e0TU7VcsM7GLy+SdY=",
+        "lastModified": 1640871638,
+        "narHash": "sha256-ty6sGnJUQEkCd43At5U3DRQZD7rPARz5VginSW6hZ3k=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "81cef6b70fb5d5cdba5a0fef3f714c2dadaf0d6d",
+        "rev": "5b091d4fbe3b7b7493c3b46fe0842e4b30ea24b3",
         "type": "github"
       },
       "original": {
@@ -130,11 +130,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1640139330,
-        "narHash": "sha256-Nkp3wUOGwtoQ7EH28RLVJ7EqB/e0TU7VcsM7GLy+SdY=",
+        "lastModified": 1640871638,
+        "narHash": "sha256-ty6sGnJUQEkCd43At5U3DRQZD7rPARz5VginSW6hZ3k=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "81cef6b70fb5d5cdba5a0fef3f714c2dadaf0d6d",
+        "rev": "5b091d4fbe3b7b7493c3b46fe0842e4b30ea24b3",
         "type": "github"
       },
       "original": {
@@ -146,11 +146,11 @@
     },
     "nur": {
       "locked": {
-        "lastModified": 1640175622,
-        "narHash": "sha256-x/DswuxU7zHAmj2xOJklbzYwDzF13BCcNgGCrxxW8+M=",
+        "lastModified": 1640994762,
+        "narHash": "sha256-BfO1/ts9PH59p8ce2jIrQSZLn85Le+CKFK0LWJPy/eM=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "ad8cfe40b77800c3cacb74ef9a18a2db0aa0dab0",
+        "rev": "98d968a5b4486b96759b2bd1dfe863fb179c92dc",
         "type": "github"
       },
       "original": {
diff --git a/rpi4.nix b/rpi4.nix
index 5ce8f4c..350bc75 100644
--- a/rpi4.nix
+++ b/rpi4.nix
@@ -52,10 +52,8 @@ in with builtins; {
   networking.firewall.allowedTCPPorts = [ 80 443 ];
   networking.firewall.allowedUDPPorts = [ 80 443 ];
 
-  security.acme = {
-    acceptTerms = true;
-    email = "dev@felschr.com";
-  };
+  security.acme.acceptTerms = true;
+  security.acme.defaults.email = "dev@felschr.com";
 
   services.ddclient = {
     enable = true;